Preserving foods is a great step to take. You can sterilise almost anything from Jams, Pickled foods and sauces.
Jars should be made from glass and free of any chips or cracks. Preserving or canning jars are topped with a glass, plastic or metal lid, which has a rubber seal. Two piece lids are best for canning, as they vacuum seal when processed.
Before filling with jams, pickles or preserves, wash jars and lids with hot, soapy water. Rinse well and arrange jars and lids open sides up, without touching, on a tray. Leave in a preheated 160 degree Celsius oven for 25 minutes. Or boil the jars and lids in a large saucepan, covered with water, for 15 minutes.
Use tongs when handling hot sterilized jars, to move them from either boiling water or the oven. Be sure tongs are sterilised too, by dipping the ends in boiling water for a few minutes.
As a rule, hot preserves go into hot jars and cold preserves go into cold jars. All items used in the process of making jams, jellies and preserves must be clean. This includes any towels used, and especially your hands.
After the jars are sterilised, you can preserve the food.